Update book location

1 files changed, 2 insertions, 2 deletions

diff --git a/docs/modules/third_party_rules_callbacks.md b/docs/modules/third_party_rules_callbacks.md

index 4a27d976fb..d06bff25eb 100644
--- a/docs/modules/third_party_rules_callbacks.md
+++ b/docs/modules/third_party_rules_callbacks.md
@@ -224,7 +224,7 @@ wishing this callback to be called on every profile change are encouraged to dis
 per-room profiles globally using the `allow_per_room_profiles` configuration setting in
 Synapse's configuration file.
 This callback is not called when registering a user, even when setting it through the
-[`get_displayname_for_registration`](https://matrix-org.github.io/synapse/latest/modules/password_auth_provider_callbacks.html#get_displayname_for_registration)
+[`get_displayname_for_registration`](https://element-hq.github.io/synapse/latest/modules/password_auth_provider_callbacks.html#get_displayname_for_registration)
 module callback.
 
 If multiple modules implement this callback, Synapse runs them all in order.
@@ -343,4 +343,4 @@ class EventCensorer:
         )
         event_dict["content"] = new_event_content
         return event_dict
-```
\ No newline at end of file
+```